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Iwasaki S, Miyake Y, Imoto H, Naka K. 1,2,5‐Triarylcycloalka[
c
]arsoles: Structural Effects of Fused‐cycloalkanes on Stability and Photophysical Properties. Chemistry 2022; 28:e202202084. [DOI: 10.1002/chem.202202084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Suzuka Iwasaki
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Goshokaido-cho Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
| | - Yusuke Miyake
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Goshokaido-cho Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Goshokaido-cho Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering Kyoto Institute of Technology Goshokaido-cho Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
- Materials Innovation Lab Kyoto Institute of Technology Goshokaido-cho Matsugasaki, Sakyo-ku, Kyoto 606-8585 Japan
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Takahara C, Iwasaki S, Kihara H, Miyake Y, Imoto H, Naka K. 4-Aryldithieno[3,2- b:2',3'- d]arsoles: effects of the As-substituent on the structure, photophysical properties, and stability. Dalton Trans 2022; 51:13734-13741. [PMID: 36004456 DOI: 10.1039/d2dt02051c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dithieno[3,2-b:2',3'-d]arsole (DTA) is one of the representative arsenic-containing conjugated units. In this work, the effects of the As-substituent on the structure, photophysical properties, and stability were investigated. Surprisingly, the As-substituent affected the structural relaxation and stability in the photo-excited state, while there was negligible effect in the ground state. Bulky substituents resulted in red-shifted emissions due to the relaxation of steric repulsion upon photo-excitation. In addition, the crystal structure highly affected the photo-degradation behaviors.
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Affiliation(s)
- Chisa Takahara
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Suzuka Iwasaki
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Hyota Kihara
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Yusuke Miyake
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. .,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Chishiro A, Akioka I, Sumida A, Oka K, Tohnai N, Yumura T, Imoto H, Naka K. Tetrachlorocatecholates of triarylarsines as a novel class of Lewis acids. Dalton Trans 2022; 51:13716-13724. [PMID: 36004500 DOI: 10.1039/d2dt02145e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pnictogen-mediated Lewis acidity is an emerging research subject in organic chemistry, supramolecular chemistry, etc. In contrast to the extensive studies on phosphorus and antimony, the diversity of arsenic-Lewis acids was quite limited. Herein, tetrachlorocatecholates of triarylarsines were newly synthesized. Their structures, electronic properties, and Lewis acidities were experimentally and computationally examined and compared with the corresponding phosphorus and antimony analogs. This is the first systematic study on the relationship between the structure and Lewis acidity of arsenic-mediated Lewis acids.
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Affiliation(s)
- Akane Chishiro
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Ippei Akioka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Akifumi Sumida
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kouki Oka
- Center for Future Innovation (Cfi) and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Norimitsu Tohnai
- Center for Future Innovation (Cfi) and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takashi Yumura
- Faculty of Material Science and Technology, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. .,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Jäkle F, Gallei M, Qiu H. 30 Year anniversary of polyferrocenylsilanes: An inspiration for new advances in main group and transition metal-containing polymers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Kihara H, Imoto H, Naka K. Synthesis of main-chain-type triphenylarsine polymers. Polym J 2022. [DOI: 10.1038/s41428-022-00653-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Inaba R, Oka K, Iwami T, Miyake Y, Tajima K, Imoto H, Naka K. Systematic Study of Pnictogen-Fused Heterofluorenes. Inorg Chem 2022; 61:7318-7326. [PMID: 35521780 DOI: 10.1021/acs.inorgchem.2c00158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Heteroatom-fused π-conjugated molecules have attracted considerable attention, and various elements for such fusion have been investigated. Herein, we focused on pnictogen-fused heterofluorenes. The structures, reactivity with O2 and I2, coordination ability to AuCl, and photophysical properties were systematically studied to better understand the effects of pnictogen atoms on the nature of π-conjugated molecules.
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Affiliation(s)
- Ryoto Inaba
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kouki Oka
- Center for Future Innovation (CFI) and Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takahiro Iwami
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Yusuke Miyake
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kunihiko Tajima
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.,Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Yukiyasu J, Inaba R, Yumura T, Imoto H, Naka K. Rational design of arsine catalysts for arsa-Wittig reaction. Org Chem Front 2022. [DOI: 10.1039/d2qo01480g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
An acyclic arsine catalyst has been developed for the room-temperature catalytic arsa-Wittig reaction. The reaction mechanism has been computationally analyzed.
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Affiliation(s)
- Junya Yukiyasu
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Ryoto Inaba
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Takashi Yumura
- Faculty of Material Science and Technology, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hiroaki Imoto
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kensuke Naka
- Faculty of Molecular Chemistry and Engineering, Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
- Materials Innovation Lab, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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